Top Quark Presentation (image) DOE/Fermi National Accelerator Laboratory Share Print E-Mail Caption Matteo Cremonesi, left, of the University of Oxford and the CDF collaboration, and Reinhard Schwienhorst of Michigan State University and the DZero collaboration present the joint discovery at a forum at Fermilab on Friday, Feb. 21. The two collaborations have observed the production of single top quarks in the s-channel, as seen in data collected from the Tevatron. Credit Fermilab Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.